I have QuarkXPress 4.1 but it hasn't been used in a while. I have a file on a CD. The file is named 2004EnglishBWpgs.qrk created on 4/4/2005 that I would like to edit, but it won't open on the MAC. Is it possible that my version of QuarkXPress is to old? Any suggestions? I also have Windows PC that could be used if it will help.